6615050161 has 2 divisors, whose sum is σ = 6615050162. Its totient is φ = 6615050160.

The previous prime is 6615050147. The next prime is 6615050177. The reversal of 6615050161 is 1610505166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6557760400 + 57289761 = 80980^2 + 7569^2 .

It is a cyclic number.

It is not a de Polignac number, because 6615050161 - 2²⁵ = 6581495729 is a prime.

It is a super-2 number, since 2×6615050161² = 87517777265092251842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6615051161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307525080 + 3307525081.

It is an arithmetic number, because the mean of its divisors is an integer number (3307525081).

Almost surely, 2^6615050161 is an apocalyptic number.

It is an amenable number.

6615050161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6615050161 is an equidigital number, since it uses as much as digits as its factorization.

6615050161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 6615050161 is about 81332.9586391642. The cubic root of 6615050161 is about 1877.2021685686.

The spelling of 6615050161 in words is "six billion, six hundred fifteen million, fifty thousand, one hundred sixty-one".